What is the frequency of radiation
with a wavelength of 5.00 x 10-8 m?
in what region of the electromag-
netic spectrum is this radiation?

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

it means there are 3 atoms of oxygen

here are some of the ways in which chemical and nuclear reactions differ.

explanation: